基于MOFs材料光催化分解水制氢的研究进展

Progress of hydrogen production by photocatalytic water splittingbased on MOFs

摘要:

“双碳”目标的提出让氢能热度持续攀升，制氢技术突破是氢能连接能源消费终端的关键桥梁，光催化分解水制氢技术是实现太阳能低碳转化的有效途径。其中，利用具有比表面积和孔隙率高、结构可调、活性位点丰富等优势的金属有机框架（MOFs）材料光催化分解水制氢是近年来的研究热点。综述和评论了国内外基于MOFs材料光催化分解水制氢体系中半导体复合、金属离子掺杂、敏化剂修饰和贵金属负载等方法的改性原理、技术难点和制氢效果等，重点阐述比较了上述MOFs改性方法在抑制光生电子空穴对复合、优化MOFs禁带宽度和增加MOFs活性位点等方面的作用，提出了未来MOFs光催化分解水制氢可深入新型MOFs材料开发、敏化剂修饰工艺优化、拓展先进表征手段的研究方向。

Abstract:

The proposal of carbon emission peak and carbon neutrality target makes the heat of hydrogen energy continue to rise. The breakthrough of hydrogen production technology is the key bridge for hydrogen energy to connect the energy consumption terminal. The hydrogen production by photocatalytic water splitting technology is an effective way to realize the low-carbon transformation of solar energy. In recent years, the hydrogen production by photocatalytic water splitting by metal-organic frameworks (MOFs) materials with high specific surface area and porosity, adjustable structure and abundant active sites is a research hotspot. The modification principles, technical difficulties and hydrogen production effects of semiconductor composite, metal ion doping, sensitizer modification and noble metal deposition methods in photocatalytic water splitting based on MOFs materials at home and abroad are reviewed and commented. The roles of above MOFs modification methods in inhibiting photogenerated electron hole pair recombination, optimizing the band gap of MOFs and increasing the active sites of MOFs are emphatically expounded and compared. The future research directions of MOFs photocatalytic water splitting for hydrogen production were proposed, which can deepen the development of new MOFs materials, optimize the sensitizer modification process and expand the advanced characterization methods.